CN211116708U - Multi-wing centrifugal fan air ducting - Google Patents

Abstract

The utility model relates to the technical field of multi-blade centrifugal fans, and discloses a multi-blade centrifugal fan air guide device. A fan is fixedly installed on one side of the air inlet, and a wind guide is connected between the air inlet and the fan. The bottom of the fan is fixedly installed with a base, one side of the air guide device is fixedly installed with an air outlet, and the outer surface of the air guide device is sleeved inside the support assembly. , through the motor to drive the rotating shaft, the rotating shaft drives the rotating blade, the rotating blade begins to absorb the external air, thus entering the fan, and the fan is transmitted through the air outlet. The air flow is shortened, the air flow is concentrated and the loss is less, the air flow density is increased, the efficiency is improved, and the noise is reduced to a certain extent.

Description

A multi-wing centrifugal fan air guide device

technical field

The utility model relates to the technical field of a multi-blade centrifugal fan, in particular to an air guide device for a multi-blade centrifugal fan.

Background technique

Multi-blade centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and induced draft of boilers and industrial furnaces, air conditioning equipment and household appliances. Cooling and ventilation; drying and selection of grain; inflation and propulsion of wind tunnel air source and hovercraft. Wind can be made into two types of right-handed and left-handed.

However, the traditional multi-blade centrifugal fan is unstable when the fan is installed on other objects, and the wind is blocked when entering the air. The air intake is not smooth, the energy loss is serious, the air inlet is large, the airflow is easily disordered, and the efficiency is reduced. . Therefore, those skilled in the art provide an air guide device for a multi-blade centrifugal fan to solve the above-mentioned problems in the background art.

Utility model content

The purpose of the present utility model is to provide a multi-blade centrifugal fan wind guide device to solve the problems raised in the above background technology.

To achieve the above object, the utility model provides the following technical solutions:

A multi-blade centrifugal fan air guide device includes an air inlet, a fan, a machine base and an air outlet, a fan is fixedly installed on one side of the air inlet, and an air guide device is connected between the air inlet and the fan, A base is fixedly installed on the bottom of the fan, an air outlet is fixedly installed on one side of the air guide device, and the outer surface of the air guide device is sleeved inside the support assembly.

As a further solution of the present invention: the air guide device includes a rotating shaft, a rotating blade, an air guide tube and a motor, one side of the fan is connected to one side of the motor, and the other side of the motor is fixedly installed with a An air guide tube, one end of the air guide tube is fixedly installed with an air inlet, a rotating shaft is sleeved inside the air guide tube, and a rotating blade is fixedly installed on the outer surface of the rotating shaft.

As a further solution of the present utility model: one end of the rotating shaft is fixedly installed on the output end of the motor, and the length of the rotating shaft is equal to the length of the air guide tube, the air guide tube is a hollow tubular structure, and the air guide tube and The motor is an interconnected structure, and the number of the rotating blades is three.

As a further solution of the present invention: the support assembly includes a casing, a beam, a vertical beam, a through hole, a bracket, a drive shaft and a bearing, the drive shaft is sleeved with the inside of the bearing, and the bearing is fixedly installed on the side of the beam. At the center of the upper surface, a vertical beam is installed at the center of the lower surface of the beam. There are through holes on the upper surface.

As a further scheme of the present invention: the beam and the vertical beam are vertically installed up and down, and the upper surface of the connection between the beam and the vertical beam is fixed with a bearing by screws, and the inner wall radius of the bearing is equal to the radius of the drive shaft, so The length of the beam is twice the length of the vertical beam, and both the beam and the vertical beam are made of stainless steel.

As a further solution of the present invention, the bracket is an L-shaped structure, the number of the through holes is four, and the through holes are evenly distributed on the upper surface of the bracket, and the shell is a hollow cuboid structure.

Compared with the prior art, the beneficial effects of the present utility model are:

1. The support assembly provided by the utility model utilizes the bolt connection between the beams and the vertical beams, the combination of the drive shaft and the bearing, and is fixed on one side of the air inlet at the same time. It supports other objects and prevents damage from other factors, and the multi-blade centrifugal fan has smooth air intake and better ventilation during use. Centrifugal fans are more convenient to use.

2. The air guide device adopted by the utility model drives the rotating shaft through the motor, the rotating shaft drives the rotating blade, and the rotating blade begins to absorb the external air, thereby entering the fan, and the fan is transmitted through the air outlet. The large air inlet space shortens the flow of air flow in the fan, makes the air flow concentrated with less loss, and increases the air flow density, thereby improving the efficiency and reducing noise to a certain extent.

Description of drawings

Fig. 1 is the structural representation of a kind of multi-blade centrifugal fan air guide device;

2 is a schematic diagram of the internal structure of an air guide device in a multi-blade centrifugal fan air guide device;

3 is a side view of a support assembly in a multi-blade centrifugal fan air guide device;

In the figure: 1. Shell; 2. Air inlet; 3. Beam; 4. Vertical beam; 5. Through hole; 6. Bracket; 7. Drive shaft; 8. Rotating shaft; 11. Fan; 12. Air guiding device; 13. Machine base; 14. Air outlet; 15. Motor; 16. Bearing; 17. Support assembly.

Detailed ways

Please refer to FIGS. 1 to 3. In the embodiment of the present invention, a multi-blade centrifugal fan air guide device includes an air inlet 2, a fan 11, a machine base 13 and an air outlet 14. One side of the air inlet 2 is fixedly installed with a Fan 11, an air guide device 12 is connected between the air inlet 2 and the fan 11, the bottom of the fan 11 is fixedly installed with a base 13, one side of the air guide device 12 is fixedly installed with an air outlet 14, and the outer surface of the air guide device 12 is fixedly installed. The air guide device 12 includes a rotating shaft 8, a rotating blade 9, an air guide tube 10 and a motor 15. The model of the motor 15 is Y80M1-2, and a control switch is installed on the front surface of the motor 15. The control switch A controller for controlling the motor 15 is installed inside. The controller model is DP-TMA-4B. One side of the fan 11 is connected to one side of the motor 15. One end of the cylinder 10 is fixedly installed with the air inlet 2, and the interior of the air guide cylinder 10 is sleeved with a rotating shaft 8, the outer surface of the rotating shaft 8 is fixedly installed with a rotating blade 9, and one end of the rotating shaft 8 is fixedly installed on the output end of the motor 15, And the length of the rotating shaft 8 is equal to the length of the air guide tube 10, the air guide tube 10 is a hollow tubular structure, and the air guide tube 10 and the motor 15 are in an intercommunication structure, the number of rotating blades 9 is three, and the fan 11 passes through the air outlet 14. After transmission, the entire design structure is simple, which effectively reduces the air intake space at the air inlet 2, shortens the flow of the air flow in the fan 11, makes the air flow concentrated and has less loss, thereby improving the efficiency.

In Figures 1 and 3: the support assembly 17 includes a housing 1, a cross beam 3, a vertical beam 4, a through hole 5, a bracket 6, a drive shaft 7 and a bearing 16, the drive shaft 7 is sleeved with the inside of the bearing 16, and the bearing 16 is fixed It is installed at the center of the upper surface of the beam 3, and a vertical beam 4 is installed at the center of the lower surface of the beam 3. Support 6, the upper surface of the support 6 is provided with a through hole 5, the beam 3 and the vertical beam 4 are vertically installed up and down, and the upper surface of the connection between the beam 3 and the vertical beam 4 is fixed with a bearing 16 by screws, and the length of the beam 3 is vertical. Twice the length of the beam 4, and the cross beam 3 and the vertical beam 4 are stainless steel components, the inner wall radius of the bearing 16 is equal to the radius of the drive shaft 7, the bracket 6 is an L-shaped structure, the number of through holes 5 is four, and The through holes 5 are evenly distributed on the upper surface of the bracket 6, and the casing 1 is a hollow cuboid structure. Remove the beam 3 and the vertical beam 4 from the casing 1, and take out the multi-blade centrifugal fan to facilitate the maintenance of the interior of the multi-blade centrifugal fan. , which further increases the utilization rate of the multi-blade centrifugal fan.

The working principle of the present invention is as follows: put the multi-wing centrifugal fan into the casing 1, use the bolt connection between the beam 3 and the vertical beam 4, and fix it on one side of the casing 1, and the drive shaft 7 and the bearing 16 are mutually connected. Combined, fixed on one side of the air inlet 2 at the same time, and at the same time the entire casing 1 is covered, which can support the centrifugal fan when it is installed on other objects, and at the same time prevent damage from other factors, and the multi-blade centrifugal fan is in use. The air intake is smooth and the ventilation effect is better. The through hole 5 on the L-shaped bracket 6 is convenient for disassembly and assembly during maintenance, which makes the multi-blade centrifugal fan more convenient to use. 15 drives the rotating shaft 8, the rotating shaft 8 drives the rotating blade 9, and the rotating blade 9 starts to absorb the external air, thereby entering the fan 11, and the fan 11 is transmitted out through the air outlet 14. The whole design structure is simple and effectively reduces the air intake space at the air inlet 2 , which shortens the flow of airflow in the fan, concentrates the airflow with less loss, and increases the airflow density, thereby improving the efficiency and reducing noise to a certain extent.

The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. The technical solution of the utility model and its utility model concept are equivalently replaced or changed, and should be covered within the protection scope of the present utility model.

Claims (6)

1. A multi-blade centrifugal fan air guide device, comprising an air inlet (2), a fan (11), a machine base (13) and an air outlet (14), characterized in that one of the air inlets (2) A fan (11) is fixedly installed on the side, an air guide device (12) is connected between the air inlet (2) and the fan (11), and a base (13) is fixedly installed at the bottom of the fan (11). An air outlet (14) is fixedly installed on one side of the air guide device (12), and the outer surface of the air guide device (12) is sleeved inside the support assembly (17). 2. A multi-blade centrifugal fan air guide device according to claim 1, characterized in that, the air guide device (12) comprises a rotating shaft (8), a rotating blade (9), an air guide tube (10) and the motor (15), one side of the fan (11) is connected to one side of the motor (15), and the other side of the motor (15) is fixedly installed with an air guide (10), the air guide An air inlet (2) is fixedly installed at one end of the cylinder (10), and a rotating shaft (8) is sleeved inside the air guide cylinder (10), and a rotating blade (9) is fixedly installed on the outer surface of the rotating shaft (8). 3. A multi-blade centrifugal fan air guide device according to claim 2, wherein one end of the rotating shaft (8) is fixedly installed on the output end of the motor (15), and the The length is equal to the length of the air guide tube (10), the air guide tube (10) is a hollow tubular structure, and the air guide tube (10) and the motor (15) are in an intercommunication structure, and the number of the rotating blades (9) for three. 4. A multi-blade centrifugal fan air guide device according to claim 1, wherein the support assembly (17) comprises a casing (1), a beam (3), a vertical beam (4), a through hole (5), a bracket (6), a drive shaft (7) and a bearing (16), the drive shaft (7) is sleeved with the inside of the bearing (16), and the bearing (16) is fixedly mounted on the beam (3) At the center of the upper surface of the beam (3), a vertical beam (4) is installed at the center of the lower surface of the beam (3), and both the beam (3) and the vertical beam (4) are fixed on one side of the casing (1) by screws A bracket (6) is fixedly installed on the other side of the casing (1), and a through hole (5) is opened on the upper surface of the bracket (6). 5. A kind of multi-blade centrifugal fan air guide device according to claim 4, is characterized in that, described transverse beam (3) and vertical beam (4) are vertically installed up and down, and transverse beam (3) and vertical beam ( 4) The upper surface of the connection is fixed with a bearing (16) by screws, the inner wall radius of the bearing (16) is equal to the radius of the drive shaft (7), and the length of the beam (3) is the length of the vertical beam (4) twice, and the beams (3) and vertical beams (4) are made of stainless steel. 6. A multi-blade centrifugal fan air guide device according to claim 4, wherein the bracket (6) is an L-shaped structure, the number of the through holes (5) is four, and the The holes (5) are evenly distributed on the upper surface of the bracket (6), and the casing (1) is a hollow cuboid structure.

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